fix(wren-ai-service): correct the wrong version in docker image

[paopa]

This PR aims to fix #632. and it has been reproduced in here. the problem is that we don't fetch the latest git ref in checkout action. refer to https://github.com/actions/checkout/issues/1327

Screenshots

• see https://github.com/Canner/WrenAI/actions/runs/10678858613/job/29596820200, for the details of the fix